In order to execute a command,
you must have execute (x) permissions on the file to be executed.
Execute permission is not needed to source
a shell script.
chmod ugo+x filepath
ls -l filepath
When a command is executed, a separate environment is created for running the command. Any changes that the command makes to its environment will not affect the environment in the command shell.
Last updated Thursday January 18, 2007
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UNIX Commands and Command Shells
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